Home / 318,642.73-439,736.88-173,458.18

Finding the Fourth Proportional to 318,642.73, 439,736.88 and 173,458.18

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Solution

The fourth proportional to 318,642.73, 439,736.88 and 173,458.18 is: 239,377.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,642.73 : 439,736.88 = 173,458.18 : x
  2. Step 2: Convert to fraction form
    318,642.73/439,736.88 = 173,458.18/x
  3. Step 3: Cross multiply
    318,642.73x = 439,736.88 × 173,458.18
  4. Step 4: Simplify right side
    318,642.73x = 76,275,959,115.73
  5. Step 5: Solve for x
    x = 76,275,959,115.73/318,642.73
  6. Step 6: Final answer
    x = 239,377.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.